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Study On The Transportation Mode Decision Of Fresh Agricultural Products

Posted on:2018-06-18Degree:DoctorType:Dissertation
Country:ChinaCandidate:Y J HeFull Text:PDF
GTID:1312330536985104Subject:Transportation planning and management
Abstract/Summary:PDF Full Text Request
Compared with the traditional goods,there are different technical standards in transportation process,multiple batches but small amount and large cost variation.the logistics of transport links is the supply side and the demand side of the important link,its transportation is the key part determining logistics service quality and is the precondition of improving logistics vitality.As a kind of social activities and economic activities,transportation is inseparable from the people's behavior decision-making,the rationality of the decision-making of fresh agricultural products' transportation mode is related to the advantages and disadvantages of the transport effect,the reasons are as follows: first,different natural environment,social environment and cognition levels of people have great influence on decision behavior of transportation mode,which is presented as different transportation demands,preferences and decisions of transportation mode;second,technical features and economic advantages of each transportation mode are different;comparative advantages under the same transportation demand are distinctive;third,decision-making process belongs to irrational selection process.Transportation decision makers have different acceptance degrees for those which “do not meet their own demands and not good for transportation purpose”,which is that they have different attitudes for the preference of risk and also affect the transportation decision-making behavior.This paper aims to analyze the general process of decision-making behavior of fresh agricultural products,analyze its internal mechanism,and verify the reliability attributes of transport system performance by validating the influence degree of subjective and objective factors on decision-making,so as to discuss the decision under system performance constraints It is preferable to give a theoretical basis for making reasonable decisions.Each part of fresh agricultural products logistics has transportation activity and the transportation runs through the production,processing,distribution and consumption process of fresh agricultural products.Between these logistics nodes,there are different shippers and carriers and there are transition connections between transportation tools.With the development of economy and society,modern fresh agricultural products logistics system depending on transportation proposes higher demand for transportation efficiency and transportation service.The influencing process of logistics for transportation activity will be expanded and deepened continuously.Discussion on transportation decision can't be separated from the big environment of logistics system;therefore,it is of practical guiding significance for decision making to sort out the role and mechanism of transportation in the whole logistics process,summarizes different transportation situation under different transportation modes and analyze its contradiction with transportation demand satisfaction.Timeliness,convenience,economy and safety are the key factors to describe the performance of transportation system.In order to study the influence degree of these factors on decision-making behavior under different modes of transportation,the abstract elements are embodied and embodied as objective factors.Through screening,it sets “cost,efficiency and safety preference” as latent variables for measuring subjective restriction factors,takes “construction of transportation infrastructure,logistics supporting system,transportation standards making and concept of low carbon and environmental protection” as latent variables for measuring objective restriction factors,sets up Structural Equation Modeling.On this basis,discusses objective constraints and subjective selection preference which affect the selection of transportation mode and clarifies the mutual restriction relation in decision making process,analyzes and verifies influencing degree of cost,time and security etc under different transportation modes,to lay the foundation for the study of decision-making under the constraints of reliability.The reliability theory is suitable for measuring the performance of different attributes,which is one of the theoretical basis for judging the quality of transportation and judging the merits and demerits of transportation decision-making,which is suitable for the transportation quality of fresh agricultural products.The advantages and disadvantages of the performance of fresh agricultural products transportation system can be analyzed from three aspects: economic reliability,aging reliability,safety and reliability.Finally,it confirms to take “calculating reliability of transportation risk” as the measuring method for the reliability of fresh agricultural products transportation system,discusses its rationality and designs its index system.The use of fault tree method,the "risk(or security,completeness of transportation quality)" as the object of study,design index system,in accordance with the top event occurred at the end of events and intermediate events of the layers of logical connection,drawing risk system And according to the mapping rules into the corresponding Bayesian network,calculates risk probability of transportation system and reliability of the whole system,and then analyzes posterior probability and the changing rate of bottom events which exert effects on the reliability of transportation system.The decision-making of transport mode belongs to the individual "irrationality" activities,and is subject to various conditions.It is embodied in the subjective choice difference under the objective condition.The difference of the transportation scheme is mainly reflected in the difference of the attribute of the transportation mode.The sensitivity of the difference of the difference of the transport scheme is different,which is divided into three different attitudes of the transportation decision,difference preference,difference aversion and difference neutral.In this paper,we study the decision-making of fresh agricultural products,and finally use the Multi-Attribute Decision-Making method,the transport safety as an important attribute of the options,reflected in the risk weight of each program and other factors on the weight of different,and then according to different transport The difference between the attributes of the way,according to meet the compensation mechanism of the possibility of high,medium and low degree,make the appropriate decision.Each transport section may imply potential transportation risk,highlight the difference between the safety attributes of the program better reflect the scientific and practical nature of the transportation decision-making,and more in line with the choice of preference under the objective restriction.In order to solve the problem of the timeliness and quality Taking into account the contradictory issues to provide ideas.
Keywords/Search Tags:Fresh agricultural products, Transportation, Transportation mode, Structural Equation Modeling(SEM), Bayesian network, Multiple Attribute Decision Making(MADM)
PDF Full Text Request
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